NYISO’s DER roadmap is spread out over the next three to five years, designed to develop market elements, functional requirements and tariff language necessary to integrate a DER system.1 CAISO believes that closer coordination with the distribution level utility will be needed to advance DER aggregations and a clean power system. While NYISO and CAISO have been making substantial ground, the development of DER still asks for a considerable amount of research and policy-making.